"The string is non-numeric"

[mikkom]

I have in selection formula condition:
{@next_day} < {?end_date} //end_date is a parameter field

{@next_day}
datevar nextdt := {@begin_date};
numbervar i := {period};
while nextdt <= currentdate + i
do (nextdt := cdate(dateadd("d",i,nextdt)));
nextdt

When I try to run report I get error message: "The string is non-numeric". When I take off that condition from selection formula, report works fine. But then it shows all values.

Is it possible to get that condition work?

 

[Turkbear]

Hi,
What is the source of

{period}


and are you sure there are no blanks or NULLs or other non-numeric values in that source?



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